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All Journal Molekul: Jurnal Ilmiah Kimia
Sampora, Yulianti
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Biochemistry, Genetics & Molecular Biology Chemistry Materials Science & Nanotechnology

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Molecular Vibration and Physicochemical Performance of Proton-Conducting Solid Polymer Electrolyte Membrane based on CMC/PVA/CH3COONH4 Ndruru, Sun Theo Constan Lotebulo; Rachmadhanti, Elvira Nur; Fridarima, Shanny; Berghuis, Nila Tanyela; Prasetyo, Ridho; Yulianti, Evi; Hayati, Atika Trisna; Adriana, Risda; Siregar, Rabiyatul Adawiyah; Sofyan, Muhammad Ihsan; Sampora, Yulianti; Annas, Dicky; Madiabu, Muhammad Jihad
Molekul Vol 19 No 3 (2024)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2024.19.3.11001

Abstract

This work studied examined the influence of ammonium acetate (CH3COONH4) on CMC/PVA-based solid polymer electrolyte (SPE) membranes, focusing on molecular vibration, proton conductivity, and physicochemical properties. SPE membranes were prepared via the casting solution method with varying CH3COONH4 concentrations to determine the optimal proton conductivity. Various characterizations, including FTIR, EIS, XRD, and TGA, were performed. The optimal membrane condition was achieved with 10 wt-% CH3COONH4 in the CMC/PVA (80/20) blend, yielding proton conductivity of 3.93×10⁻⁴ S/cm and favorable mechanical, thermal, and crystallinity properties, making it suitable for proton-conducting polymer applications. Keywords: ammonium acetate, carboxymethyl cellulose, ionic conductivity, poly(vinyl alcohol), proton battery, solid electrolyte membrane
A Comparative Evaluation of Solid-State Catalysts for Synthesis of Non-Ionic Surfactant Based Oleic Acid for Enhanced Oil Recovery (EOR) Sampora, Yulianti; Sofyan, Muhammad Ihsan; Ghozali, muhammad; Triwulandari, Evi; Restu, Witta Kartika; Ndruru, Sun Theo Constan Lotebulo; Devy, Yenni Apriliany; Handayani, Annisa Fitriyah; Safitri, Gita Nur; Satria, Erza Eka
Molekul Vol 20 No 1 (2025)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2025.20.1.11077

Abstract

Abstract. The Enhanced Oil Recovery (EOR) process with chemical techniques carried out by injecting chemicals such as surfactants, can be an alternative to increase oil production, especially in old oil wells. This study investigated the best formulation of non-ionic surfactants based on the mole ratio of oleic acid and PEG-400 as well as catalyst types such as KOH and p-TSA 1%, which are used in surfactant synthesis to be able to increase oil production. The tests carried out are the value of acid, saponification, ester, and iodine, FTIR, NMR as well as a test of compatibility, phase behavior, and IFT. The results showed that the best formulation of ester polyethylene glycol oleate with reaction temperature conditions of 130oC was at a mole ratio of 1: 4 using a 1% p-TSA catalyst with a value of acid is 3,61 mg KOH/g, saponification is 144,12 mg KOH/g, ester is 140,51 mg KOH/g and iodine is 76,70 g I2/100 g. The compatibility tests and phase behavior show that this surfactant can be developed in chemical EOR with an IFT value of 2,6 x 10-1 mN/m. Keywords: Enhanced oil recovery, oleic acid, solid-state catalysts, synthesis
Co-Authors Adriana, Risda Annas, Dicky Berghuis, Nila Tanyela Devy, Yenni Apriliany Evi Triwulandari Evi Yulianti Fridarima, Shanny Handayani, Annisa Fitriyah Hayati, Atika Trisna Madiabu, Muhammad Jihad Muhammad Ghozali Ndruru, Sun Theo Constan Lotebulo Prasetyo, Ridho Rabiyatul Adawiyah Siregar Rachmadhanti, Elvira Nur Safitri, Gita Nur Satria, Erza Eka Sofyan, Muhammad Ihsan Witta Kartika Restu